Anzaldo Formation


The Anzaldo Formation is a Katian geologic formation of central Bolivia. The formation belongs to the Cochabamba Group, overlies the Capinota Formation and is overlain by the San Benito Formation. The formation is famous for being where Sacabambaspis, a jawless fish that has become a popular internet meme in recent years, was discovered.

Fossil content

The formation has provided the following fossils:

Fish

;PteraspidomorphiHuemacaspis bistrami

Trilobites

  • ''Leiostegina inexpectans''

Bivalves

?Grammysia sp.?Modiomorpha sp.?Parallelodon sp."Ctenodonta" sp.
  • ''"Goniophorina" sp.''

Gastropods

  • ''Gyrospira tourteloti''

Lingulida

Bistramia elegans
  • ''Dignomia munsterii''